Home / 570,192,515.16-786,865,638.78-309,432,131.16

Finding the Fourth Proportional to 570,192,515.16, 786,865,638.78 and 309,432,131.16

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Solution

The fourth proportional to 570,192,515.16, 786,865,638.78 and 309,432,131.16 is: 427,016,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,192,515.16 : 786,865,638.78 = 309,432,131.16 : x
  2. Step 2: Convert to fraction form
    570,192,515.16/786,865,638.78 = 309,432,131.16/x
  3. Step 3: Cross multiply
    570,192,515.16x = 786,865,638.78 × 309,432,131.16
  4. Step 4: Simplify right side
    570,192,515.16x = 243,481,511,544,270,144
  5. Step 5: Solve for x
    x = 243,481,511,544,270,144/570,192,515.16
  6. Step 6: Final answer
    x = 427,016,323.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.